Kimley-Horn, WSP, Terracon, Tetra Tech, and Langan head the rankings of the nation's largest engineering firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2021 Giants 400 Report.
| Top 75 Engineering Firms for 2021 | ||
| FIRM | 2020 REVENUE | |
| 1 | Kimley-Horn | $568,704,813 |
| 2 | WSP USA | $427,524,789 |
| 3 | Terracon Consultants* | $333,200,000 |
| 4 | Tetra Tech High Performance Buildings Group | $275,271,866 |
| 5 | Langan | $265,000,000 |
| 6 | IMEG Corp. | $224,013,000 |
| 7 | Arup | $201,742,315 |
| 8 | KPFF Consulting Engineers | $196,364,000 |
| 9 | Jensen Hughes | $168,616,860 |
| 10 | Affiliated Engineers Inc. | $158,545,000 |
| 11 | Henderson Engineers | $127,760,939 |
| 12 | Walter P Moore | $123,338,091 |
| 13 | Syska Hennessy Group | $119,163,759 |
| 14 | Fluor Corp. | $99,440,000 |
| 15 | Vanderweil Engineers | $96,610,100 |
| 16 | Pennoni* | $94,656,000 |
| 17 | M.C. Dean | $77,787,370 |
| 18 | ESD | $71,584,764 |
| 19 | TLC Engineering Solutions | $69,643,721 |
| 20 | CMTA | $67,150,322 |
| 21 | Jaros, Baum & Bolles | $64,580,081 |
| 22 | AKF Group | $63,400,000 |
| 23 | RMF Engineering | $60,000,000 |
| 24 | ME Engineers | $57,550,000 |
| 25 | DeSimone Consulting Engineers | $54,127,073 |
| 26 | Magnusson Klemencic Associates | $53,738,949 |
| 27 | Arora Engineers | $47,395,349 |
| 28 | I.C. Thomasson Associates | $45,814,885 |
| 29 | Smith Seckman Reid | $45,007,506 |
| 30 | P2S | $44,272,937 |
| 31 | Martin/Martin Consulting Engineers | $40,285,857 |
| 32 | HEAPY | $38,881,623 |
| 33 | Mazzetti | $38,158,927 |
| 34 | Bala Consulting Engineers | $36,900,000 |
| 35 | Newcomb & Boyd | $36,121,754 |
| 36 | HPE Data Center Technologies Services (Facilities Consulting) | $33,700,000 |
| 37 | Osborn Engineering | $32,744,000 |
| 38 | raSmith | $30,600,000 |
| 39 | M/E Engineering | $28,465,000 |
| 40 | ThermalTech Engineering | $25,477,000 |
| 41 | Wallace Design Collective | $24,700,000 |
| 42 | Dunham Associates | $24,670,000 |
| 43 | H.F. Lenz | $24,111,000 |
| 44 | TEECOM | $23,196,162 |
| 45 | LBYD | $22,396,139 |
| 46 | French & Parrello Associates | $22,196,623 |
| 47 | KCI Technologies | $20,063,200 |
| 48 | Spectrum Engineers | $19,627,296 |
| 49 | Bridgers & Paxton Consulting Engineers | $19,148,968 |
| 50 | Specialized Engineering Solutions | $17,257,550 |
| 51 | Swanson Rink | $17,165,115 |
| 52 | EYP Mission Critical Facilities | $16,700,000 |
| 53 | Peter Basso Associates | $14,900,000 |
| 54 | Schaefer | $13,941,058 |
| 55 | Karpinski Engineering | $13,200,500 |
| 56 | Kohrs Lonnemann Heil Engineers | $12,915,464 |
| 57 | PBS Engineers | $12,203,000 |
| 58 | McKinstry | $12,000,000 |
| 59 | RMH Group, The | $11,562,362 |
| 60 | JQ Engineering | $11,316,761 |
| 61 | Kohler Ronan | $10,685,797 |
| 62 | Allen + Shariff | $9,459,083 |
| 63 | OLA Consulting Engineers | $9,167,477 |
| 64 | Tighe & Bond | $8,540,000 |
| 65 | MHP Structural Engineers | $7,137,443 |
| 66 | TAS Energy | $7,125,000 |
| 67 | G2 Consulting Group | $6,930,000 |
| 68 | DHE Engineering | $6,919,756 |
| 69 | Architectural Engineers | $6,907,886 |
| 70 | SSC Engineering | $6,734,533 |
| 71 | Paradigm Structural Engineers | $6,569,792 |
| 72 | Wick Fisher White | $6,271,000 |
| 73 | KCL Engineering | $5,083,849 |
| 74 | JP Harvey Engineering Solutions | $4,906,928 |
| 75 | New York Engineers | $3,426,500 |
| 76 | JALRW Engineering Group | $2,900,000 |
| 77 | Weitz Company, The | $1,738,500 |
| 78 | Structured Engineering Solutions | $1,400,000 |
| 79 | Marque Engineering | $1,375,822 |
SOURCE: 2021 Giants 400 Report *Editors' estimate Note: WSP USA was moved from the Top 40 Engineering/Architecture (EA) Firms list on 9/2/21.
BACK TO THE 2021 GIANTS 400 LANDING PAGE
Related Stories
Giants 400 | Oct 23, 2023
Top 75 Multifamily Engineering Firms for 2023
Kimley-Horn, WSP, Tetra Tech, Olsson, and Langan head the ranking of the nation's largest multifamily housing sector engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking factors revenue for all multifamily buildings work, including apartments, condominiums, student housing facilities, and senior living facilities.
Giants 400 | Oct 23, 2023
Top 190 Multifamily Architecture Firms for 2023
Humphreys and Partners, Gensler, Solomon Cordwell Buenz, Niles Bolton Associates, and AO top the ranking of the nation's largest multifamily housing sector architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking factors revenue for all multifamily buildings work, including apartments, condominiums, student housing facilities, and senior living facilities.
Giants 400 | Oct 17, 2023
Top 70 Sports Facility Construction Firms for 2023
AECOM, Turner Construction, Clark Group, Mortenson head BD+C's ranking of the nation's largest sports facility contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Oct 17, 2023
Top 70 Sports Facility Engineering Firms for 2023
Alfa Tech Consulting Engineers, ME Engineers, AECOM, and Henderson Engineers top BD+C's ranking of the nation's largest sports facility engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Oct 17, 2023
Top 130 Sports Facility Architecture Firms for 2023
Populous, Gensler, HOK, and HKS head BD+C's ranking of the nation's largest sports facility architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Oct 11, 2023
Top 100 Industrial Construction Firms for 2023
ARCO Construction, Clayco, Walbridge, and Gray Construction top the ranking of the nation's largest industrial facility sector contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Oct 11, 2023
Top 90 Industrial Sector Engineering Firms for 2023
Jacobs, IPS, CRB Group, and Burns & McDonnell head the ranking of the nation's largest industrial facility sector engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Oct 11, 2023
Top 100 Industrial Sector Architecture Firms for 2023
Ware Malcomb, Arcadis, Stantec, and Gresham Smith top the ranking of the nation's largest industrial facility sector architecture and architecture/engineering (AE) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report.
Giants 400 | Oct 5, 2023
Top 115 Healthcare Construction Firms for 2023
Turner Construction, Brasfield & Gorrie, JE Dunn Construction, DPR Construction, and McCarthy Holdings top BD+C's ranking of the nation's largest healthcare sector contractors and construction management (CM) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking includes revenue related to all healthcare buildings work, including hospitals, medical office buildings, and outpatient facilities.
Giants 400 | Oct 5, 2023
Top 90 Healthcare Engineering Firms for 2023
Jacobs, WSP, IMEG, BR+A, and Affiliated Engineers head BD+C's ranking of the nation's largest healthcare sector engineering and engineering/architecture (EA) firms for 2023, as reported in Building Design+Construction's 2023 Giants 400 Report. Note: This ranking includes revenue related to all healthcare buildings work, including hospitals, medical office buildings, and outpatient facilities.
